Analysis
- max time kernel
150s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
08/09/2026, 01:56
Static task
static1
2 signatures
Behavioral task
behavioral1
Sample
2026-09-07_ef3c0576d25e69630fadcf6218f5f99e_cryptolocker_elex.exe
Resource
win10v2004-20260513-en
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
2026-09-07_ef3c0576d25e69630fadcf6218f5f99e_cryptolocker_elex.exe
Resource
win11ltsc2024-20260709-en
5 signatures
150 seconds
General
- Target 2026-09-07_ef3c0576d25e69630fadcf6218f5f99e_cryptolocker_elex.exe
- Size 41KB
- Sample260908-cc71fabl9v
- SHA256 19d8010def646be83d1d6c63ff6b8f44621f51b466c25a70e4ff655f6b378f72
- MD5 ef3c0576d25e69630fadcf6218f5f99e
- SHA1 a91e1def14b7482475366cd86452889c989c85ed
- SHA512 e13b819436771145ea2837d6b0f854b38a0c8c577ec18deb8ea929425e0db1f8c3be2e14be0b8401551df3fcfc1a49c497d5a3c5ac5e0b2bcfdb6fe2f340cf5f
- SSDEEP 768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAnA:bCDOw9aMDooc+vAA
- TLSH T1D3132F396BD4F772D277BA7184F241D2A8F475123B14C82D7ECE9347A822A3EAD5120D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1400-0-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1400-10-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x00160000000115f1-14.dat CryptoLocker_rule2 behavioral2/memory/4804-26-0x0000000008000000-0x000000000800A000-memory.dmp CryptoLocker_rule2 - Executes dropped EXE 1 IoCs
pid Process 4804 lossy.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2026-09-07_ef3c0576d25e69630fadcf6218f5f99e_cryptolocker_elex.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language lossy.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 1400 wrote to memory of 4804 1400 2026-09-07_ef3c0576d25e69630fadcf6218f5f99e_cryptolocker_elex.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2026-09-07_ef3c0576d25e69630fadcf6218f5f99e_cryptolocker_elex.exe"C:\Users\Admin\AppData\Local\Temp\2026-09-07_ef3c0576d25e69630fadcf6218f5f99e_cryptolocker_elex.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1400 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4804
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\lossy.exe
- Size 41KB
- SHA256 96ea4ae8703479403eeb1e62d723bf53bce6b4934b4abe1923fa1cc0c81fe3c4
- MD5 0ef880b3a64c8209fa7e8a80f68f92e9
- SHA1 cdb21f4eccd4785f535d79c5c30703dfcabf02a4
- SHA512 4e63adb478da5b5311795d6bee537abc98760352046c682ff4c6ec223f0740225e3e4569af11c4afa476b219113c176f231cc61b239df24c73bd85647e29a1a2
- SSDEEP 768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAnq:bCDOw9aMDooc+vAq
- TLSH T1A0132F386BD4F772D277BA7184F241D2A8F475123B14C82D7ECE9347A822A3EAD5120D
- MD5 SHA1 SHA512 SSDEEP TLSH